#! /usr/bin/env python
# -*- coding: utf-8 -*-
# vim:fenc=utf-8
#
# Copyright © 2018 crane <crane@his-pc>
#
# Distributed under terms of the MIT license.

"""
返回无向图连通分量个数
"""

class Solution:
    def countComponent(self, edges):
        # edges [(1, 2), (2, 4), (4,3)]
        pass


def main():
    print("start main")

if __name__ == "__main__":
    main()
